ClinicalTrials.gg
RecruitingNCT00004847Updated Oct 8, 2026

Diagnosis of Pheochromocytoma

A Phase 1 interventional study of ([18F]-DOPA) and ([18F]-6F-DA) in Pheochromocytoma, Endocrine Disease and Endocrine Diseases, sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD). Recruiting at 1 site in United States. Open to participants aged 3 Years to 120 Years. Per ClinicalTrials.gov, last updated 2026-10-08.

Sponsored by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) · Phase 1, Interventional, and Diagnostic

From the registry’s dates

  • Started Mar 2000; still recruiting 26 years 7 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
3,000
Allocation
Not applicable
Ages
3 Years to 120 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 69 studies in Pheochromocytoma with a site in United States — 21 open to participants now, 30 under way, none of them phase 3. Pheochromocytoma · United States.

Planned enrollment
Largest of 52
3,000 · median 31
Started
2000
with 1 other
Phase 1
13 of 69
6 open now
Primary completion
2048-11
later than 25 of 25 live
Registered
5th of 69
by date
Lead sponsor
2 of 69
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Among the 69 studies in Pheochromocytoma with a site in United States, this one has the largest planned enrollment of the 52 interventional ones, is one of 2 that started in 2000, is one of 13 in phase 1, reaches primary completion later than 25 of the 25 other live ones, and was the 5th registered.

By phase

69 studies; the count open now beside each. This study's row is marked.

Phase 230 · 6 open
Phase 1this study13 · 6 open
Observational10 · 4 open
Other kind6 · 2 open
Phase 1/25 · 2 open
No phase2 · 1 open
Phase 32 · 0 open
Phase 2/31 · 0 open

By the year they started

First in 1988; this study’s year is marked. 2 started in 2000.

Size and results

Median enrollment 31 across the 52 interventional studies, 370 across the 10 observational. Of the 30 that completed or were terminated, 13 (43%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 69 studies in Pheochromocytoma with a site in United States, or all of them as a file.
02

Study summary

The goal of this study is to develop better methods of diagnosis, localization, and treatment for pheochromocytomas. These tumors, which usually arise from the adrenal glands, are often difficult to detect with current methods. Pheochromocytomas release chemicals called catecholamines, causing high blood pressure. Undetected, the tumors can lead to severe medical consequences, including stroke, heart attack and sudden death, in situations that would normally pose little or no risk, such as surgery, general anesthesia or childbirth.

Patients with pheochromocytoma may be eligible for this study. Candidates will be screened with a medical history and physical examination, electrocardiogram, and blood and urine tests. Study participants will undergo blood, urine, and imaging tests, described below, to detect pheochromocytoma. If a tumor is found, the patient will be offered surgery. If surgery is not feasible (for example, if there are multiple tumors that cannot be removed), evaluations will continue in follow-up visits. If the tumor cannot be found, the patient will be offered medical treatment and efforts to detect the tumor will continue. Main diagnostic and research tests may include the following:

  1. Blood tests - mainly measurements of plasma or urine catecholamines and metanephrines as well as methoxytyramine. If necessary the clonidine suppression test can be carried out.
  2. Standard imaging tests - Non-investigational imaging tests include computed tomography (CT), magnetic resonance imaging (MRI), sonography, and 123I-MIBG scintigraphy and FDG (positron emission tomography) PET/CT. These scans may be done before and/or after surgical removal of pheochromocytoma.
  3. Research PET scanning is done using an injection of radioactive compounds. Patients may undergo 18F-FDOPA, 18F-DA, as well as 68Ga-DOTATATE PET/CT . Each scan takes up to about 2 hours.
  4. Genetic testing - A small blood sample is collected for DNA analysis and other analyses.
Read the detailed description

Pheochromocytomas (PHEOs) and paragangliomas (PGLs) are rare and clinically important chromaffin cell tumors that typically arise from the adrenal gland or from extra-adrenal paraganglia, respectively. The clinical features and consequences of PHEO/PGL result from the release of catecholamines (norepinephrine and/or epinephrine). An undetected PHEO/PGL poses a hazard to patients undergoing surgery, childbirth, or general anesthesia, due to the potential for excess catecholamine secretion, which can result in significant, often catastrophic outcomes. Diagnosing and localizing a PHEO/PGL can be challenging. Plasma and urinary catecholamines as well as their metabolites and radio-iodinated metaiodobenzylguanidine (MIBG) scanning can yield false-positive/negative results in patients harboring the tumor. Computed tomography (CT) and magnetic resonance imaging (MRI) lack sufficient specificity. The molecular mechanisms by which genotypic changes predispose to the development of PHEO/PGL remain unknown - even in patients with identified pathogenic variants. Moreover, in patients with hereditary predispositions, PHEOs/PGLs differ in terms of their growth, malignant potential, catecholamine phenotype, responses to standard screening tests, various imaging modalities and therefore subsequently, different therapeutic options. This protocol focuses on developmental, molecular, genetic, epigenetic, proteomic, metabolomics, immunologic and other types of studies to investigate the bases for predisposition to develop PHEOs/PGLs and for expression of different neurochemical and other phenotypes and malignant potentials including therapeutic responses. Furthermore, this protocol will also use new imaging approaches, for example [18F]-6F-dopamine ([18F]-6F-DA), and [18F]-L-3,4-dihydroxyphenylalanine ([18F]-FDOPA) positron emission tomography (PET)/CT, as well as dynamic contrast-enhanced MRI.

03

Conditions studied

  • Pheochromocytoma
  • Endocrine Disease
  • Endocrine Diseases

Keywords

  • Genetics
  • Metanephrines
  • PET
  • Catecholamines
04

Who can participate

Ages eligible
3 Years to 120 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Patients are eligible for inclusion in this study if they are adults or children of age 3 years old and up with known, sporadic or familial PHEO/PGL, on the basis of one or more of the following:

  1. High levels of blood or urinary catecholamines, metanephrines, methoxytyramine or chromogranin A.
  2. Highly suspected presence of PHEO/PGL based on imaging studies, even with normal biochemistry.
  3. Personal or family history of PHEO/PGL or genetic pathogenic variants known to predispose individuals to develop PHEO/PGL.

Signed is required. The informed consent may be signed by the patient, parent/guardian in pediatric patients or legally authorized representative (LAR) in adults who lack-decision making capacity to consent to research participation.

Patients must have an outside general practitioner or endocrinologist. Patients with disease must also have an outside oncologist.

Family Members of Patients Arm (Linkage Analysis)

Participants are eligible for inclusion in this study arm if they are:

  • Adult family members of patients enrolled in this study;
  • The index family member in this study has a suspected hereditary PHEO/PGL based on previous genetic testing and other suspicious hereditory patterns such as family history of multiple individuals with PHEO/PGL; early age of disease onset; multiplicity of primary tumors; recurrence, etc. and
  • Signed informed consent form is required

Exclusion criteria

EXCLUSION CRITERIA:

Potential patients will be excluded on the basis of one or more of the following:

  1. Pregnant or breastfeeding women
  2. Severe cardiac dysfunction
  3. Currently on dialysis

A pregnancy test is performed in women of childbearing age (up to age 55) as a screening after consenting. If a patient is found to have a positive pregnancy test, her participation in this protocol will be terminated. The patient can enroll or re-enroll in the protocol when she is no longer pregnant or breastfeeding.

In-person participating patients who are not willing to return to the NIH (e.g., after surgery or an initial evaluation) for more than 2 years may be removed from the protocol.

SPECIFIC INCLUSION/EXCLUSION CRITERIA FOR IMAGING STUDIES WITHIN OUR PROTOCOL:

In adult patients (Excludes Linkage Analysis Arm)

Imaging studies are not done in patients that have the following exclusion criteria:

  • Inability to lie still for the entire imaging time (e.g., cough, severe arthritis, etc.).
  • Inability to complete the needed and standard-of-care imaging examinations due to other reasons (e.g., severe claustrophobia, radiation phobia, etc.)
  • Any additional medical conditions, serious illness, or other extenuating circumstance that, in the opinion of the Principal Investigator, may significantly interfere with study compliance.

In pediatric patients:

Inclusion criteria for research PET imaging in children:

  • Children over 10 years old with very high suspicion of sporadic or familial PHEO/PGL based on at least one of the following:

    • The presence of new onset of symptoms typical of PHEO/PGL such as hypertension or hypertensive episodes, sweating, headaches, pallor, palpitations, drug resistant hypertension, etc.
    • Family history of PHEO/PGL or genetic pathogenic variants known to predispose individuals to develop these tumors.
    • The presence of a tumor on conventional imaging including ultrasound, CT and/or MRI or [123I]-MIBG or PET imaging not limited to [18F]-FDG.
  • Children must give informed assent and be willing to return to the NIH for follow-up.

Exclusion criteria for research PET imaging in children:

  • Children of less than 10 years of age.
  • Children with impaired mental capacity that precludes informed assent.
  • Inability to lie still for the entire imaging time (e.g., cough, turbulent children, severe claustrophobia, etc.).
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
3,000 participants (estimated)

Study arms

  • Experimental
    Adults or children with suspected PHEO/PGL

    Patients are adults or children of any age with known, sporadic or familial PHEO/PGL

    Drug: ([18F]-DOPA) · Drug: ([18F]-6F-DA)

Interventions

  • Drug([18F]-DOPA)

    is L 3, 4 dihydroxyphenylalanine (L-DOPA) labeled with the radioactive isotope 18F. In general, PPGLs belong to the group of neuroendocrine tumors. This heterogeneous group of tumors takes up amino acids, transforms them into biogenic amines (dopamine and serotonin) by decarboxylation and stores the amines in vesicles. L DOPA is a precursor of catecholamines (dopamine, norepinephrine and epinephrine). Epinephrine conversion to dopamine is catalyzed by the aromatic amino acid decarboxylase. According to previous and current studies, \[18F\]-DOPA PET is highly sensitive and specific for detection of PHEO/PGL67-69. However, there are only a few reports in the literature using \[18F\]-DOPA as a PET agent and particularly for patients with metastatic PPGLs. PET imaging will be done together with either a CT, an MRI or both modalities.

  • Drug([18F]-6F-DA)

    is an imaging agent developed at the NIH, that may improve specificity and sensitivity in the localization of PPGLs. \[18F\]-6F-DA enters cells via the membrane norepinephrine transporter. Once inside cells, \[18F\]-6F-DA is translocated via the vesicular monoamine transporter into storage vesicles, where the radioactivity is concentrated. After injection of \[18F\]-6F-DA, the much faster disappearance of \[18F\]-6F-DA-derived radioactivity from the bloodstream and non-neuronal cells than from chromaffin cells should enable rapid visualization of PPGLs by PET scanning.

06

What researchers measure

Primary outcomes

  1. To study specific genotypes, biochemical and imaging phenotypes of patients with various pheochromocytomas and paragangliomas.To stuty potential treatment options for metastatic pheochromocytoma and paraganglioma using cell cultures, cell ...

    To study specific genotypes, biochemical and imaging phenotypes of patients with various pheochromocytomas and paragangliomas.To stuty potential treatment options for metastatic pheochromocytoma and paraganglioma using cell cultures, cell lines, animal

    Time frame: Baseline

Secondary outcomes

  1. To educate health care professionals and patients about pheochromocytoma and paraganglioma

    To educate health care professionals and patients about pheochromocytoma and paraganglioma

    Time frame: end of study

07

Study locations

1 of 1 sites recruiting
  • National Institutes of Health Clinical Center
    Bethesda, Maryland 20892, United States
    Recruiting
    • For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR) · Contactccopr@nih.gov · 800-411-1222
08

References and documents

Publications

  • Jha A, Patel M, Carrasquillo JA, Ling A, Millo C, Saboury B, Chen CC, Wakim P, Gonzales MK, Meuter L, Knue M, Talvacchio S, Herscovitch P, Rivero JD, Chen AP, Nilubol N, Taieb D, Lin FI, Civelek AC, Pacak K. Sporadic Primary Pheochromocytoma: A Prospective Intraindividual Comparison of Six Imaging Tests (CT, MRI, and PET/CT Using 68Ga-DOTATATE, FDG, 18F-FDOPA, and 18F-FDA). AJR Am J Roentgenol. 2022 Feb;218(2):342-350. doi: 10.2214/AJR.21.26071. Epub 2021 Aug 25. PubMed 34431366 ↗
  • Wolf KI, Jha A, van Berkel A, Wild D, Janssen I, Millo CM, Janssen MJR, Gonzales MK, Timmers HJKM, Pacak K. Eruption of Metastatic Paraganglioma After Successful Therapy with 177Lu/90Y-DOTATOC and 177Lu-DOTATATE. Nucl Med Mol Imaging. 2019 Jun;53(3):223-230. doi: 10.1007/s13139-019-00579-w. Epub 2019 Feb 22. PubMed 31231443 ↗
  • Abdul Sater Z, Jha A, Mandl A, Mangelen SK, Carrasquillo JA, Ling A, Gonzales MK, Lopes Abath Neto O, Miettinen M, Adams KT, Nockel P, El Lakis M, Pacak K. Gallbladder Paraganglioma Associated with SDHD Mutation: a Potential Pitfall on 18F-FDOPA PET Imaging. Nucl Med Mol Imaging. 2019 Apr;53(2):144-147. doi: 10.1007/s13139-018-0558-1. Epub 2019 Feb 19. PubMed 31057686 ↗
  • Taieb D, Jha A, Guerin C, Pang Y, Adams KT, Chen CC, Romanet P, Roche P, Essamet W, Ling A, Quezado MM, Castinetti F, Sebag F, Pacak K. 18F-FDOPA PET/CT Imaging of MAX-Related Pheochromocytoma. J Clin Endocrinol Metab. 2018 Apr 1;103(4):1574-1582. doi: 10.1210/jc.2017-02324. PubMed 29534198 ↗
09

Timeline

2 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Mar 2000 (actual). Primary completion is estimated for Nov 2048, 584 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 2, 2000
First posted
Mar 3, 2000
StartActual
Mar 22, 2000
Primary completionEst.
Nov 30, 2048
CompletionEst.
Nov 30, 2048
Last update
Oct 8, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Minor edits
Nothing that changes what the study is or who can join. Edited: description
2 updates, last Oct 8, 2026
Show all 2 updates
  1. Oct 8, 2026
    Minor edits only
    + 1 other change: description
  2. Oct 2, 2026
    Minor edits only
    + 1 other change: description

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT00004847
Responsible party
Sponsor
First posted
Mar 3, 2000
Start date
Mar 22, 2000
Primary completion
Nov 30, 2048 (estimated)
Completion
Nov 30, 2048 (estimated)
Last update
Oct 8, 2026

Study contacts

Alberta Derkyi, C.R.N.P.
Contact
alberta.derkyi@nih.gov
(301) 827-3355
Catherine M Gordon, M.D.
Contact
catherine.gordon@nih.gov
(301) 827-5449
Catherine M Gordon, M.D.
principal investigator · Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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